200222102100021 has 4 divisors (see below), whose sum is σ = 266962802800032. Its totient is φ = 133481401400012.

The previous prime is 200222102099969. The next prime is 200222102100023. The reversal of 200222102100021 is 120001201222002.

200222102100021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200222102100021 - 2¹⁷ = 200222101968949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200222102100023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33370350350001 + ... + 33370350350006.

It is an arithmetic number, because the mean of its divisors is an integer number (66740700700008).

Almost surely, 2^{200222102100021} is an apocalyptic number.

It is an amenable number.

200222102100021 is a deficient number, since it is larger than the sum of its proper divisors (66740700700011).

200222102100021 is an equidigital number, since it uses as much as digits as its factorization.

200222102100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66740700700010.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 200222102100021 its reverse (120001201222002), we get a palindrome (320223303322023).

The spelling of 200222102100021 in words is "two hundred trillion, two hundred twenty-two billion, one hundred two million, one hundred thousand, twenty-one".